Tensile, fireproof, flame-retardant and termite-resistant flexible cable

一种抗拉型耐火阻燃防白蚁柔性电缆

Abstract

The utility model discloses a tensile, fireproof, flame-retardant and termite-resistant flexible cable. The cable comprises a plurality of conductors, and a composite fireproof layer, an insulating layer and a slip layer are successively wrapped outside each conductor, so that insulating cores are formed. Each composite fireproof layer successively comprises, from inside to outside, a first mica tape, a fireproof inorganic short fiber viscose glue layer and a taped layer. The insulating cores and the reinforced steel cores are intertwisted to form a cable core. A second mica tape is wrapped outside the cable core. An inner sheath, a nylon protective layer and an outer sheath are successively wrapped outside the second mica tape. A filling layer is arranged between the cable core and the second mica tape. The cable of the utility model has a simple structure, exhibits good tensile performance, is equipped with the composite fireproof layers and the second mica tape so as to be protected by two fireproof layers, is effectively promoted in terms of fireproof performance and is effectively prevented from being bitten by termites. Moreover, the insulating cores exhibit excellent slip performance among each other, so that the cable is convenient to bend, is not liable to deform and is prolonged in terms of the service life.
本实用新型公开了一种抗拉型耐火阻燃防白蚁柔性电缆,包括有数组导体,每组导体外均依次包覆有复合耐火层、绝缘层和滑移层,并构成绝缘线芯,复合耐火层由内向外依次为第一云母带、耐火无机短纤维粘胶层和绕包层,数根绝缘线芯与加强钢芯绞合后构成缆芯,缆芯外包覆有第二云母带,第二云母带外依次包覆有内护套、尼龙防护层和外护套,缆芯与第二云母带之间设有填充层。本实用新型结构简单,具有较好的抗拉能力,采用复合耐火层和第二云母带的设计,为电缆提供了双层耐火保护,有效地提升了电缆的耐火性能,有效地防止了电缆遭到白蚁的啃咬,各绝缘线芯之间具有良好的滑移性,方便弯折,且不易变形,延长了电缆的使用寿命。

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